wetmoee



(No Model.) 2 Sheets-Sheefi 1.

J. A. WETMORE.

AUTOMATIC FEED FUR PRINTING PRE$$ES. No. 359,752. Patented M81222, 87.

A E5 I) Vz u' $1, Lmw bo jl (No Model.) 2 Sheets-Sheet 2.

J. A. WETMORE.

AUTOMATIC FEED FOR PRINTING PRESSES.

N0. 359,752. 3 Patentfid Mar. 22, 1887.

T\ W3 "F D D q UNITED STATES PATENT Erich,

AUTOMATIC FEED FOR PRlNTlNG-PRESSES.

SPECIPICATIOI? forming part of Letters Patent No. 359,752, dated March 22,

Application filed June 26, 1885.

To all 207M722, it may concern:

Be it known that I, JEAN A. XVETMORE, of

Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Automatic Feed for Printing- Presscs, of which the following is a specification.

My invention consists in an improvement in electrical paper-feeders for printing-presses, and is an improvement on the invention for which I filed an application for a patent on the 28th day ofJanuary, 1884, and will be fully pointed out in the claims.

Figure 1 is a plan view of a portion of a printing-press with my invention attached. Fig. 2 is a side elevation. Fig. 3 is an end elevation of the table and guides, showing also rollers J. Fig. 4 is a rear elevation.

A represents the frame of the machine.

13 represents the table which supports the paper to be fed to the press, and 0 represents the prcsscylinder, which is provided with the usual appliances for grasping a sheet of paper. (Not shown, because well known and not part of my invention.)

5 represents an insulated piece of metal set into the face of the table at its lower end so as to be flush therewith.

I represents an arm secured to a shaft, 2',

journaled in the frame of the press above the cylinder, and one end of arm I reaches over the table B and has its end forked to receive a shaft on which is secured a rubberfaced wheel, H, which rests on the table when the forked end of arm I is depressed, and also a pulley, 'V.

it represents the rubber facing of wheel H. The other end of arm I carries an adjustable counterweight, L.

K K represent arms secured to shaft i, and carrying at their ends a shaft on which is loosely set ametal wheel or roller, J, insulated from arms K K and adapted to make contact with the metal piece y. The arms K K are free to turn on shaft '27, to permit said shaft to be rocked without raising wheel J out of contact with the metal piece 9.

Y represents an eccentric on the shaft of the cylinder 0, and Z represents an eccentricrod which is pivoted to an arm, X, secured to the end of shaftt, so that at each revolution of the cylinder the shaft *5 will be rocked and wheel H raised away from the table.

Serial No. 189,849. (No model.)

n represents a shaft secured in and extend ing across the frame of the press, and on this shaft are loosely set two gear-wheels, M 1v,

which are fastened to pulleys Q R, respectively, also set loosely on said shaft. The pulley R is to be driven constantly by a belt, S, from any suitable source of power, and from the pulley Q a belt, P, runs over the pulley V, and is tightened when the pulley V is depressed toward the table by an idler-pulley, \V.

0 represents a pinion broad enough to mesh at once with both gear'wheels M N, hung on a pivoted arm, 19, supported by a standard, 8, secured to shaft 91. Up to this point the machine hcrein shown and described is the same as that shown in my former application.

0' represents a spring, for which a weight may be substituted, attached to the end of pivoted arm and to shaft 11-, and tends constantly to raise the pinion O away from the gear-wheels.

m represents an electro-magnet secured to shaft 02, and having its poles directly under the pivoted arm 19, between the pivot and the end of said arm, which carries the pinion O.

T represents a similar'elcctromagnet ca rried by a standard, 10. above said arm 1), which is provided on each side opposite the poles of the electro-magnets with an armature when the arm itself is made of any material not subjeet to the attraction of a magnet.

a represents an electric generator, of any type which will furnish a currentofelcctricity.

0 represents an electrical conductor which runs from the metal piece 9 in the table to the electro-magnct m,- d, a similar conductor running from the magnet in to one pole of the generator (1, and Z) asimilar conductor running from the other pole of the generator a t6 the insulated wheel J.

c f represent conductors, which connect the terminals of the coil of the electro magnet T with the poles of the generator.

The circuit composed of the conductors c (Z Z) is of much lower resistance than the circuit composed of the conductors cf, as is indicated by the difference in the size of said conductors.

To guide the paper to the cylinder and at the same time prevent the feed-wheel H from feeding more than one sheet at a time, I secure to the table 13 the adj ustahle guides D, each of which consists of a board standing on edge secured to a slotted bracket, E, which lies on the table and embraces a bolt, F, set in the table, and has on its upper end a nut, G, too large to pass through the slot in the bracket, by which means the guide may be adjusted to any desired position and securely clamped in place.

On the inner surface of each guide D, I secure a piece of rubber, u, or other similar material, which projects far enough from the side of the guide to come in contact with the edge of a pile of sheets of paper placed between the guides. I place this retarding device at a point farther from the delivery end of the table than the point where the feed-wheel H.

strikes the table, so that the feed-wheel will pull each sheet of paper from the retarding device, instead of pushing it against the same. To prevent any of the sheets of paper from working between the table and the guides, I attach to the bottom of each guide a piece of metal or rubber, 3, which will l e under the v top sheet of paper, as before.

bottom sheet of paper.

The operation of my invention is as follows:

\ A pile of sheets ofpaper is placed on the table B, under the feed-wheel H, and the guides D D are adjusted so that the retarding devices a come in contact with the edges of the paper. Power is applied to the press and to the pill ley It, and at the same time the generator a is started. Owing to the difi'erence in resistance of the two circuits with which the generator is connected, the current will [low chiefly through the circuit a d b, and will excite electro-magnet m, which will attract arm 1) and hold pinion 0 firmly meshed with wheels M N. As wheel N is constantly driven by pulley R, motion will be communicated through wheel N, pinion 0, wheel M, pulley Q. and belt I to pulley V, and the fecd-wheel H will be rotated and will draw the uppermost sheet of paper off from the pile and feed it down toward the cylinder, to be grasped and carried off by the cylinder in the usual manner. In its path to thc cylinder the sheet of paper passes between metal piccc g and wheel J, and, being a nonconductor of electricity, it breaks the circuit 0 (Z I), and the electric current immediately passes entirely through the other circuit, 6 f, and excites elcctro-magnet T, which attracts pivoted arm 1), and, aided by spring a, raises the pinion 0 away from wheels M N, thus stopping the motion of the feed-wheel II. At the time that the cylinder grasps the sheet of paper fed down to it the eccentricYforces rod Z upward and rocks shafti, so as to raise the feed wheel H off from the paper, andafter the sheet has been drawn onto the cylinder allows the feed-wheel H to fall back on thetop of the pile of paper. As soon as the sheet of paper is drawn from between wheel J and metal piece g the circuit 0 d I; is restored, electro magnet in again draws pinion 0 into gear with wheels M N, and feed-wheel H feeds down the The friction be tween the retarding devices a and the paper is great enough to overcomethe frictionbetween the sheets of paper themselves, and consequently but one sheet isfedat a time.

It is evident that the positions of the two circuits and the office performed bythe magr net in such circuits may be. reversed, the spring being also reversed:

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with the driving mech: anism of an electrical printing-press feeder, of an electromagnet adapted, when excited,- to hold said driving mechanism in gear, situated in a circuit of low resistance, which crosses the path of the paper on its way to the impression-cylinder, whereby said circuit is broken by each sheet of paper on its way to the cylinder, and an electro-maguet adapted, when excited, to throw and. hold said driving mechanism out of gear,situated in an electrical circuit of high resistance as compared with: said first-named circuit, substantiallyas shown.

and described.

2. In combination with the driving mech anism of a printing press feeder, the electrical circuit consisting of the generator a, conductors c d b, magnet 1n, contact-wheel J,

contact-piece g, all \forminga circuit of low resistance, and the electrical circuit consisting of the generator a, conductors e f,and magnet T, forming a circuit of comparatively high resistance, substantially as shown and described.

3. In a printing-press feeder, the combination of the table B, the cylinder 0, the rockshaft 1', actuated from said cylinder, the arms I and K K, mounted. on said rock -shaft, the feed-roller H and contact-roller J, carried by said arms, respectively, the contact-piece g, apulley, V, on the shaft of the feed-roller, the loose pulleys Q R, having gears M N, the pinion 0, adapted to connect said gears, an electro-magnct, m, situated in an electrical'circuit of low resistance and adapted to hold said pinion and gears in mesh, an electro-mag net, T, situated in an electrical circuit of high resistance and adapted to throw said pinion and gears out of mesh, a belt, 1?, for connecting the pulleys Q and V, andmeans for actuf ating the pulley R, substantially as shown and described.

4. In combinationswith the table B, the

lower edges the projecting strips 3, attached to the slotted brackets E, and the bolts Fsfiilld.

nuts G, substantially as shown and described.

5. The combination, with the feed-table B,

of the laterally-adjustable guides D D, pro vided on their inner sides with retarding devices of rubber or like material, substantially as described.

JEAN A. WETMORE.

\Vitnesses:

A. \V. S. PRooroR, V. B. IVIABEN. 

